Here are some of the things we know about so-called ‘immunity passports’:-

What are immunity passports?

Immunity passports are essentially certificates that would share information showing that someone is immune to COVID-19.

The certificates would be dependent on research into how what level of immunity people are left with after contracting coronavirus.

Tech firms are already working on digital immunity passports which would allow citizens to show their coronavirus test results to third parties, like employers and restaurants, using a temporary QR code on their phone.

Are other countries using immunity passports?

Estonia has reportedly begun testing one of the world's first digital immunity passports as part of efforts to restart its economy.

Authorities in popular tourist destinations including Greece, Sardinia and the Balearic Islands are reportedly also talking about antibody-based passports.

Chile’s Ministry of Health has also announced plans to issue digital “release certificates” to people who are clear of coronavirus symptoms.

Why are people opposed to them?

During the virtual question time of the House of Lords, independent crossbencher the Earl of Clancarty said the certificates had “the potential to be socially divisive and foster prejudice” if they were valued by employers.

“They would also implicitly endorse the government’s original, much vilified herd immunity policy,” he said.

“They are a terrible idea and the government would be wise not to go down this road.”

In its guidance on immunity passports, the WHO said: “Some governments have suggested that the detection of antibodies to the SARS-CoV-2, the virus that causes COVID-19, could serve as the basis for an ‘immunity passport’ or ‘risk-free certificate’ that would enable individuals to travel or to return to work assuming that they are protected against re-infection.

“There is currently no evidence that people who have recovered from COVID-19 and have antibodies are protected from a second infection.”